US 12,216,304 B2
Illumination device including light guide with tilted portion
Shinichi Komura, Tokyo (JP); Koichi Okuda, Tokyo (JP); Ken Onoda, Tokyo (JP); and Hiroaki Kijima, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jun. 21, 2023, as Appl. No. 18/338,521.
Application 18/338,521 is a continuation of application No. 17/657,400, filed on Mar. 31, 2022, granted, now 11,726,253.
Claims priority of application No. 2021-060862 (JP), filed on Mar. 31, 2021.
Prior Publication US 2023/0333307 A1, Oct. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0018 (2013.01) [G02B 6/0028 (2013.01); G02B 6/0031 (2013.01); G02B 6/0036 (2013.01); G02B 6/0045 (2013.01); G02B 6/0046 (2013.01); G02B 6/0055 (2013.01); G02B 6/0068 (2013.01); G02B 6/0091 (2013.01); G02B 6/0048 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A display device comprising:
a light emitting device comprising a first light emitting part, a second light emitting part adjacent to the first light emitting part in a first direction, and a third light emitting part adjacent to the second light emitting part in the first direction;
a light guide comprising a tilted portion opposed to the light emitting device and including a plane tilted to the first direction, and an effective area portion configured to guide light made incident from the tilted portion and to emit light propagating inside the light guide; and
a liquid crystal panel configured to display images by selectively transmitting light emitted from the effective area portion of the light guide, wherein
a distance along the first direction from the first light emitting part to the third light emitting part is larger than a thickness of the effective area portion.